Metal case for sash-windows.



W "gages.

M. DESCOMMUNAUX.

METAL CASE FOR SASH WINDOWS.

APPLICATION FILED DEC. 1, 1910.

COLUMBIA PLANOGRAPH CO..WASH|NGTON. n. c.

Patented Feb. 11, 1913.

2 SHEETSSHEET l.

M. D'ESCOMMUNAUX.

METAL CASE FOR SASH WINDOWS.

APPLICATION FILED DEG. 1, 1910.

Patented Feb. 11, 1913.

2 SHEETS-SHEET Z.

Mventor. %(-Mc QWWW COLUMBIA PLANOGRAPH co- WASHINGTON. n. c.

MARC DESGOIVIMUNAUX, OF PARIS, FRANCE.

METAL CASE FOR SASH-WINDOWS.

Application filed December 1, 1910.

To all whom it may concern:

Be it known that I, MARC DEsooMMUNAUx, a citizen of the French Republic,residing at Paris, France, have invented certain new and usefulImprovements in Metal Cases for Sash-lVindows, of which the following isa specification.

This invention relates to sash-windows of the type in which the uppersash has to be lowered and the lower sash to be lifted in order to openthe window. The upper sash is suspended by means of a counterweightattached to the sash by a chain which can be operated by means ofcrank-handle fixed to a pinion. The lower sash is also suspended bymeans of a counterweight and chain, but operated by hand.

In the accompanying drawings the improved case for sash-windows isshown.

Figure l is a front view of the window case with the two sashes. Fig. 2is a vertical section on line A-A of Fig. 1. Fig. 3 is a verticalsection on line BB of Fig. 1. Fig. 4 is a plan view illustrating thesuspension of the upper sash. Fig. 5 is a plan view illustrating thesuspension of the lower sash. Fig. 6 is a horizontal section on line CCof Fig. 1. Fig. 7 is a cross section on a larger scale on line D-D ofFig. 1.

This invention is characterized by the combination of the suspendingchains for each sash with a common counterweight.

The invention further concerns the means for operating the upper sashand which consist in a pinion having a crank handle, said pinion beingdesigned to act upon the chain attached to the counterweight.

The window case consists of the two uprights 7) of U-iron. The sashesare adapted to slide in the grooves formed by the arms of the U-irons.If the window is closed the upper sash c abuts against the upper end ofthe case and the lower sash (Z rests upon the lower end of the case, theupper end bearing against the lower end of the upper sash. The loweredge of the upper sash rests upon the top edge of the lower sash.

The upper sash c is suspended on the one hand at the chain 6 and on theother hand at the chain f. The chain c is guided over the chain wheelsg-Jz. and it descends from the chain wheel it into the vertical chamber2' arranged at this side of the case. The other chain f is guided over achain wheel j m0unted upon the same axle as the chain wheel hSpecification of Letters Patent.

Patented Feb. 11,1913.

Serial No. 595,085.

and it is fixed with its ends 70 to the chain c. The chain c is longerthan the chain f and its end, after having been guided over the pinion Zupon the axle m of which a crank handle a is fixed, goes up through thechamber 2' to the top end of the case where it is guided over thesprocket wheel 0 to descend again in said chamber 2'. At the end of thechain c the counterweight 70 is fixed. This weight is calculated so asto balance the weight of the upper sash 0. It is obvious that the sash acan be lowered and lifted without any effort, being suspended by twochains which on the other hand carry the counterweight 79.

The handling of the upper sash 0 is greatly facilitated by the crankhandle 77, which through the intermediary of the pinion Z operates thechains with the counterweight.

The lower sash cl is suspended, on the one hand, by the chain q and, onthe other hand by the chain 7. The chain 9 is guided over the two chainwheels 8, t mounted at the top end of the case and it descends in avertical chamber a at the side of the case. The second chain 1' isguided over a chain wheel 21 mounted upon the same axle as the chainwheel t. The ends of both chains are fixed to the common counterweightw. The lower sash d whose weight is thus balanced by the counterweight mcan be easily operated by means ofthe handle y. It is to be understoodthat for the lower sash a pinion and crank handle of similarconstruction could be used as those provided for the upper sash.

The well known advantages of sash windows, namely the easy ventilatingof rooms are secured by the improved suspension hereinbefore described,as the upper sash as well as the lower sash can be easily lowered andlifted for a certain distance so that a ventilating opening at the upperend of the window and a ventilating opening at the lower end of thewindow can be obtained. The fresh air entering through the lowerventilating slot drives the bad air out of the room through the upperventilating slot.

In the drawings the chain wheels for the upper and for the lower sashhave been shown as being arranged in superposed horizontal planes but itis evident that the same could be situated in the same horizontal plane.

The improved sash window is particularly useful for hospitals, barracks,schools, town houses, offices and store rooms but it can be used as wellwith ordinary dwelling houses.

I claim An improved metal case for sash windows comprising incombination an upper sash and a lower sash moving in oppositedirections, a chain fixed with one end to the left hand edge of theupper sash, two chain wheels above the upper sash over which said chainis guided, a vertical chamber at the right hand side of the case, anaxle revolubly mounted near the bottom end of said chamber so that itsfront end protrudes from the front wall of said chamber, a pinion keyedon said axle around which said chain is guided, a crank handle upon theouter end of said axle, a sprocket wheel at the upper end of saidchamber over which said chain is guided and a counterweight fixed at theend of said chain and located in said chamber, said counterweightbalancing the upper sash, a second chain fixed with one end to the righthand side upper edge of the upper sash, a chain wheel over which saidsecond chain is guided fixed to the righthand side chain wheel for thefirst chain and the other end of said second chain fixed to said firstchain above said pinion; a lower sash, a handle for moving said lowersash, a chain fixed with one end to the right hand edge of said lowersash, two chain wheels at the upper end of the window case over whichsaid chain of the lower sash is guided, a second chain fixed to the lefthand side edge of the lower sash, a chain wheel fixed to the left handside chain wheel of said first chain of the lower sash and over whichsaid second chain is guided, a vertical chamber at the left of the case,a counterweight for balancing the lower sash located in said chamber andfixed to the ends of said first and second chain substantially asdescribed and shown and for the purpose set forth,

In witness whereof I have hereunto set my hand in the presence of twowitnesses.

MARC DESGOMMUNAUX. Witnesses:

GUSTAVE MARNOTTE, CHARLES PETITJEAN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, I). C.

